Both of the circuit's are very simple, making some of the building blocks for today's ic intended layout, be child like think simple. Avoid childishness it gets in your way; thinking you can't do that - that way.
In the late 1970's when the RISC processor was produced, they never thought it would be available for a few dollars and be used for home automation. Now we call them arduino boards and use them for everything.
Simple is good.
